/* =================== THEME TOKENS ==================== */
/* Default = Peach-Petal */
:root {
  /* Core */
  --bg:        #fff3f6;
  --panel:     #fff9f7;
  --ink:       #3b2a30;
  --ink-dim:   #7a646b;
  --accent:    #ff7aa2;
  --line:      #f3cfd8;
  --chip:      #ffe8ee;

  /* Status */
  --ok:   #20b26b;
  --warn: #e29b19;
  --bad:  #e84b5b;

  /* Surfaces */
  --bg-spot:    #ffdfe8;  /* body radial hotspot */
  --topbar-1:   #ffe7ee;  /* topbar gradient start */
  --topbar-2:   #ffe0d4;  /* topbar gradient end */
  --field-bg:   #ffffff;  /* inputs */
  --btn:        #ffe5ec;  /* base button */
  --btn-primary:#ffd6df;
  --btn-good:   #ecfff6;
  --btn-warn:   #fff4e3;
  --badge-bg:   #fff0f4;
  --thumb-bg:   #fffaf8;
}

/* Dark theme overrides */
:root[data-theme="dark"] {
  --bg:        #0f1115;
  --panel:     #171a21;
  --ink:       #e7e7ea;
  --ink-dim:   #b9bcc6;
  --accent:    #7aa7ff;
  --line:      #2a2f3a;
  --chip:      #222734;

  --ok:   #22c55e;
  --warn: #f59e0b;
  --bad:  #ef4444;

  --bg-spot:     #1b2030;
  --topbar-1:    #141925;
  --topbar-2:    #10131b;
  --field-bg:    #0e1118;
  --btn:         #1d2331;
  --btn-primary: #22304a;
  --btn-good:    #183925;
  --btn-warn:    #2a1f0d;
  --badge-bg:    #202432;
  --thumb-bg:    #0f131d;
}

/* =================== BASE STYLES ===================== */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--ink);
  background: radial-gradient(1200px 800px at 80% -10%, var(--bg-spot) 0%, var(--bg) 60%);
  -webkit-overflow-scrolling: touch;
  padding-bottom: env(safe-area-inset-bottom);
}

.topbar {
  display:flex; align-items:center; gap: 1rem; padding: .75rem 1rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--topbar-1), var(--topbar-2));
  position: sticky; top: 0; z-index: 5;
}
.brand { font-weight: 800; letter-spacing:.3px; }
.nav a { color: var(--ink-dim); text-decoration: none; margin-right: .75rem; padding:.25rem .5rem; border-radius: 8px; }
.nav a.active, .nav a:hover { color: var(--ink); background: var(--chip); }

#app { max-width: 1200px; margin: 1rem auto; padding: 0 1rem; }
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin-bottom: 12px;
}
.controls { display:flex; flex-wrap: wrap; gap:.5rem; align-items:center; }
.controls input[type="file"], .controls input[type="text"], .controls input[type="number"], .controls input[type="url"] {
  background: var(--field-bg); color: var(--ink); border:1px solid var(--line); border-radius:8px; padding:.4rem .6rem;
}
button {
  background: var(--btn); color: var(--ink); border:1px solid var(--line); border-radius:8px; padding:.45rem .7rem; cursor:pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--btn-primary); }
button.good    { background: var(--btn-good);    border-color: var(--line); color: #176347; }
:root[data-theme="dark"] button.good { color: var(--ink); border-color: var(--line); }
button.warn    { background: var(--btn-warn);    border-color: var(--line); color: #7a4f0f; }
.badge { display:inline-block; padding:.15rem .45rem; border-radius:999px; background: var(--badge-bg); border:1px solid var(--line); color: var(--ink-dim); }

.grid { display:grid; gap:12px; }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
.grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }

.row { display:flex; gap:.5rem; align-items:center; }
.ml-auto { margin-left:auto; }
.hr { height:1px; background: var(--line); margin:10px 0; }
.note { color: var(--ink-dim); }

.thumbwall { display:grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap:10px; }
.thumb {
  border:1px solid var(--line); border-radius:10px; background: var(--thumb-bg); padding:8px; display:flex; flex-direction:column; gap:6px;
}
.thumb canvas { width:100%; height:auto; background:#fff; border-radius:6px; display:block; }
.thumb .row { justify-content: space-between; }

.kv { display:grid; grid-template-columns: 140px 1fr; gap:8px; align-items:center; }
kbd { background: var(--field-bg); border:1px solid var(--line); border-radius:6px; padding:0 .4rem; color: var(--ink-dim); }
a.link { color: var(--accent); text-decoration: none; }
.foot { max-width:1200px; margin: 1rem auto; color: var(--ink-dim); padding: 0 1rem 1rem; }
.hidden { display:none !important; }

/* =================== VIEWER ===================== */
#viewerWrap {
  overflow: auto;
  overscroll-behavior: contain;
  border-radius: 10px;
}

/* Canvas should never introduce inline baseline gaps */
#viewerWrap canvas { display:block; }

/* Fit mode: canvas fills container width */
#viewerWrap.fit canvas { width: 100% !important; height: auto !important; }

/* ===== Mobile polish ===================================================== */

/* Fluid base size: readable on phones, steady on desktop */
html { font-size: clamp(14px, 1.2vw + 10px, 16px); }

/* Container breathing room on small screens */
#app { max-width: 1100px; padding: 0 .75rem; }

/* Make controls wrap cleanly and inputs grow */
.controls { gap: .6rem; }
.controls input[type="file"],
.controls input[type="text"],
.controls input[type="number"],
.controls input[type="url"] {
  flex: 1 1 220px;
  width: 100%;
  min-height: 40px;
}

/* Touch-friendly buttons */
button { min-height: 40px; }
@media (pointer: coarse) {
  button { min-height: 44px; } /* iOS tap target */
}

/* Panels: a bit tighter on mobile */
.panel { padding: 12px; }

/* Viewer max-height (fallback + modern viewport units) */
#viewerWrap { max-height: calc(100vh - 180px); }
@supports (height: 100svh) {
  #viewerWrap { max-height: calc(100svh - 180px); }
}
/* If browser supports dvh, prefer it (accounts for browser UI visibility) */
@supports (height: 100dvh) {
  #viewerWrap { max-height: calc(100dvh - 180px); }
}

/* Thumb grid adapts */
.thumbwall { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
@media (max-width: 820px) {
  .grid.cols-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
}

/* Topbar compacts on small screens */
@media (max-width: 640px) {
  .topbar { padding: .6rem .75rem; gap: .6rem; }
  .brand { font-size: 1rem; }
  .nav a { margin-right: .5rem; }
}

/* Prevent accidental double-scroll; canvas still uses attribute sizing */
#wm-preview { overflow: hidden; }
#wm-preview canvas { display: block; max-width: 100%; height: auto; }

/* Phone: make Fit truly fill the device width edge-to-edge */
@media (max-width: 640px) {
  body { overflow-x: hidden; padding-left: env(safe-area-inset-left); padding-right: env(safe-area-inset-right); }

  /* When JS adds .fullbleed alongside .fit, the viewer spans the viewport */
  #viewerWrap.fullbleed {
    width: 100vw;
    margin-left:  calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    padding-left:  0;
    padding-right: 0;
    border-left:   0;
    border-right:  0;
    border-radius: 0;
  }
}

/* Brand layout */
.topbar .brand { display:flex; align-items:center; gap:.5rem; }

/* Base icon styling */
.favicon { display:inline-block; width:64px; height:64px; }

/* Default: show light icon, hide dark */
.icon-dark { display:none; }

/* When dark theme is active (your JS sets data-theme="dark") */
:root[data-theme="dark"] .icon-light { display:none; }
:root[data-theme="dark"] .icon-dark  { display:inline-block; }

/* ===== Intro (re-triggerable, IMG-safe, no layout shift) ================== */
@media (prefers-reduced-motion: no-preference) {
  body.intro .topbar {
    animation: pcBarIn 700ms ease-out both;
    will-change: opacity, transform, background-position;
    background-size: 200% 100%;
  }
  @keyframes pcBarIn {
    0%   { opacity: 0; transform: translateY(-6px); background-position: 100% 0; }
    60%  { opacity: 1; }
    100% { opacity: 1; transform: translateY(0);    background-position: 0 0; }
  }

  body.intro .brand {
    animation: pcBrandIn 420ms 80ms cubic-bezier(.2,.7,.2,1) both;
    will-change: transform, opacity;
  }
  @keyframes pcBrandIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  /* Works for whichever IMG (light/dark) is visible */
  body.intro .brand .favicon {
    animation:
      pcLogoPop 520ms 120ms cubic-bezier(.2,.7,.2,1) both,
      pcLogoGlow 900ms 200ms ease-out both;
    transform-origin: 50% 50%;
    will-change: transform, filter, opacity;
  }
  @keyframes pcLogoPop {
    0%   { opacity: 0; transform: translateY(3px) scale(.92) rotate(-4deg); }
    60%  { opacity: 1; }
    100% { opacity: 1; transform: translateY(0) scale(1) rotate(0); }
  }
  @keyframes pcLogoGlow {
    0%   { filter: drop-shadow(0 0 0 var(--accent)); }
    55%  { filter: drop-shadow(0 0 10px var(--accent)); }
    100% { filter: drop-shadow(0 0 0 var(--accent)); }
  }

  body.intro #app {
    animation: pcAppIn 320ms 120ms ease-out both;
    will-change: transform, opacity;
  }
  @keyframes pcAppIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
  }
}

@media (prefers-reduced-motion: reduce) {
  body.intro .topbar,
  body.intro .brand,
  body.intro .brand .favicon,
  body.intro #app { animation: none !important; }
}

.foot { 
  text-align: center; 
}